The Grow Awards 2026 🏆 
New leaves turning yellow under led
torgul2000started grow question 3y ago
My autos are turning into flowering. It seem I’m under led, respecting the grow schedule and new leaves are turning light green… is it normal or a deficiency/excess (iron?) ?
Thank you for the answers
Solved
Leaves. Color - Yellow
likes
superseaanswered grow question 3y ago
they look good to me they are transitioning into flowering the heads will kind of be lighter when the flower starts to form.
GrowingGrannieanswered grow question 3y ago
This is absolutely normal.. all new growth is that light green and it will darken up to "normal" as it gets older... no worries!
1 like
Complain
Similar Grow Questions
Solved
southerngrower2020
Leaf damage and flower analysisAsking for thoughts on leaf damage. I think there may be nutrient shock so I will be reducing PPM to 800 to see if that helps. I am confused by other problems seen on a few leaves. I also want to ask if I am getting close to harvest (check flower pics) since this is an autoflower6y ago
4
3
Solved
DrBinoc
Magnesium or Nutrient Burn or?Magnesium deficiency, or nutrient burn or??? Only on the lower leaves so far, curling down was existing genetics - but the burnt tips are new and some have even curled up now. Probably 5+ weeks left so too early for natural dying off?Leaves. Tips - Burnt
Leaves. Color - Yellow
6y ago
5
4
Solved
soulsofarmony
Deficiences or overfeedingIn the last 3 days two of my plant seem to have some problems. First the oldest leaf turno Yellow and the become burnt. I Always check the ph solution and i Always feed them in this 2 weeks so i thought that maybe i overfeed them. I post the pics in the appropriate section.HELPLS4y ago
5
4
Solved
Ftr_3650
Yellow leavesHad a bit of nutrient issues, yellow leaves with some black spots and tears, will these leaves bounce back or should I remove them?Leaves. Color - Yellow
6y ago
3
4
Solved
roro_204
Yellow/ Lime Leaves ????I have 3 grow rooms.
I moved all the deficiency plants to 1 room.
The whole half of the plant is turning really light yellow/
Are my lights too close to the plants ?
Or is my feed to low?Leaves. Color - Yellow
Setup. Lighting
Feeding. Deficiences
4y ago
4
3
Solved
Dr_GrThumb
1st time grower - nute burn? Lockout? Potassium def? Light burn? HELP PLEASEExperiencing some deficiencies/light burn/heat stress. Says SSH likes hot/moist climate. Plants are planted in FFOF Soil, fed them 15oz of nutes yesterday. Using advanced nutrient systems, see above. Light is a SF1000 LED meant for a 2x2 tent. Would that burn them hanging at 20”?4y ago
6
6
Solved
Straightcurve6
Plz helpHi need help please. 7th week super lemon haze autos not sure if need cal mag or if it has too much nutes or lockout, idk I'm stuck. Thanks in advance.Leaves. Curl down
Leaves. Color - Yellow
5y ago
5
Solved
7even
Outdoor northern lights auto yellowing earlyWith 3-4 weeks of flowering still to go, how worried should I be about rapid yellowing? I have kept feeding, i know she is rootbound and I havent checked pH. Do some plants just yellow earlier in flowering or should I act?Week 11
Leaves. Color - Yellow
3y ago
1
1
Solved
Noahbear
Are my leaves light stressed?Are my leaves getting too much light? They seem light stresses. Any input would be great- thanksLeaves. Color - Yellow
Setup. Lighting
4y ago
3
2
Solved
Growpotkin
Light burnI've got what I think is light burn. I can't dim or raise my LED lights (300w), but I'm currently running them 24/0. Would switching to 18/6 help? Or would it help to take the burned plant and have it out in natural light during the day? I'm growing autos and they're flowering.Week 11
Leaves. Color - Yellow
5y ago
1
1
Solved
Smokin_Joe
Leaf Discoloration - Hopefully NothingI'm looking to rest my concerns that these removed fan leaves from lower/center canopy are not simply just appearing so due to lack of light and prior plant tie damage.
Focus on the yellow/brown discoloration, actual physical damage is accounted for.
More details in main post.Week 8
Leaves. Color - Yellow
5y ago
3
3
Solved
FelandS
Hydroponic virgin, yellowing and curling. Ph balanced, all plants aresame ageHaving problems with yellowing on a Ultimate Auto front left w/ yellow-striped leaves. Big Bud's Auto in same solution are not growing as fast yellowing w/curving leaves, while birthday cake Auto , in same, is thriving. All plants started in FoxFarm Hydro at the same time. Help4y ago
1
5
Solved
THC_Hazeman
Yellow lower leavesGuys/girls please help!
Lower leaves have started getting yellow. I really don't know the issue.
Is it of nitrogen deficiency? A lot of you have told me that 4ml of fish juice is a lot, so is there a possibility of nutrient burn? How can save her?Week 4
Leaves. Color - Yellow
3y ago
1
2